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package PDF::FromHTML::Template::Container::Margin;
use strict;
BEGIN {
use vars qw(@ISA);
@ISA = qw(PDF::FromHTML::Template::Container::Always);
use PDF::FromHTML::Template::Container::Always;
}
# This is the common parent for <header> and <footer>. It exists so that
# common code can be factored out. The code here is used for redefining
# Context::should_render(). Normally, it restricts display only to
# between the top and bottom margins. However, footers and headers are
# supposed to write in those margins, so the children of this type of
# node need to be allowed anywhere on the page.
sub enter_scope
{
my $self = shift;
my ($context) = @_;
$self->SUPER::enter_scope($context);
{
no strict 'refs';
my $class = ref $context;
$self->{OLD_CHECK_EOP} = \&{"${class}::check_end_of_page"};
*{"${class}::check_end_of_page"} = sub { return 1 };
}
return 1;
}
sub exit_scope
{
my $self = shift;
my ($context) = @_;
{
no strict 'refs';
my $class = ref $context;
*{"${class}::check_end_of_page"} = delete $self->{OLD_CHECK_EOP};
}
@{$context}{qw/X Y/} = @{$self}{qw/OLD_X OLD_Y/};
return $self->SUPER::exit_scope($context);
}
1;
__END__
=head1 NAME
PDF::FromHTML::Template::Container::Margin - Base class for HEADER and FOOTER
=head1 NODE NAME
None (This is not a rendering class)
=head1 INHERITANCE
PDF::FromHTML::Template::Container::Always
=head1 ATTRIBUTES
None
=head1 CHILDREN
PDF::FromHTML::Template::Container::Footer
PDF::FromHTML::Template::Container::Header
=head1 AFFECTS
Nothing
=head1 DEPENDENCIES
None
=head1 USAGE
None
=head1 AUTHOR
Rob Kinyon (rkinyon@columbus.rr.com)
=head1 SEE ALSO
ALWAYS, HEADER, FOOTER
=cut
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